Graphophone-cylinder.



Patented Sept. :18, I900.

No. 657,956. A. N. PETIT.

GRAPHOPHONE CYLINDER.

(Application flied Nov. 15, 1899.

(No Model.)

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*UNITED STATES PATENT OFFICE.

ADEMOR N. PETIT, OE NEWARK, NEW JERSEY.

GRAPHOPHONE-CYLINDER.

SPECIFICATION forming part of Letters Patent No. 657,956, datedSeptember 18, 1900. Application fil d No b 15,1399. Serial No. 737,016.(No model.)

To all whom it may concern:

Be it known that I, ADEMOR N. PETIT, a

I citizen of the United States, residing at Newark, in the county ofEssex and State of New Jersey, have invented a new and useful'Improvement in Record-Cylinders for Phonographs, Graphophones, andSimilar Instruments, of which the following is a specification.

As heretofore constructed, records or cylinders for phonographs,graphophones, and similar machines have been made from a preparation ofwax or similar material. These records have been of considerablethickness and appreciable weight. They have been made with a taperopening through the center to receive and fit upon the taper mandrel ofthe machine. These records have beeu of a delicate nature, because theywere easily broken and the surface was readily marred or disfigured ifaccidentally brought in contact with anyhardersubstance.Oonsequentlytheyhad to be very carefully handled, and special deviceshave been made for receiving, storing, and carrying the said recordsfrom place to place.

The object of my invention is to overcome these difficulties.

My invention is a new article of manufacture; and it consists of acylinder or record of celluloid in which the respective ends are bentinward, so as to leave the opening of adiameter to fit upon the tapermandrel of the machine, and which openings at the ends of the cylinderare of less diameter than the interior diameter of the cylinder. Thesecylinders are light and strong and the surface is hard and they do nothave to be handled with any particular care, and special devices do nothave to be provided for storing or carrying about the same.

In the drawings, Figure 1 is an elevation of a cylinder upon themandrel, and Fig. 2 is an elevation of the mandrel and longitudinalsection of the cylinder or record.

The cylinder or record a is formed from a tube of celluloid or similarmaterial of an external diameter agreeing with the diameter of thecylinders or records already in use and upon the market. The tube is ofsufficient thickness for strength, but is withal exceedingly light, andthe interior diameter is somewhat greater than the diameter of themandrel at any point. In order that the tube may fit upon the tapermandrels in use and be concentric therewith, the respeciive ends aresoftened and are bent inward. The end b is inwardly curved and of thegreatest diameter, and the. end 0 is bent inward in a tapering form,preferably, and is of the lesser diameter. I prefer to bend the ends inin such a manner that the cylinder or record so formed slips readilyupon the mandrel of the phonograph, graphophone, 0r other.machine and.when in place is held with sufficient friction to prevent anypossibility of the cylinder or record slipping on the mandrel. Thecylinder or record is produced of one piece of ma terial,'the ends beingintegral and bent inward, preferablyof the form shown in thelongitudinal section. These cylinders possess lightness and strength andare comparatively inexpensive, and they are not readilybroken, and thereis a great savingiu weight over and above cylinders of ordinaryconstruction.

In my application for Letters Patent, Serial No. 734,933, filed October27, 1899, I have described the method of and materials for treating thesurface of cylinders or record-blanks of this character, so that therecord may be impressed upon the surface of the cylinder in the samemanner as the record is impressed upon the wax surface of the ordinarycylinder.

I claim as my invention 1. As a new article of manufacture, a cylinderor record for phonographs, graphophones or similar machines, formed froma tube with the ends integral and bent inward and provided with openingsof different diameters,

so that they fit upon the taper mandrel of the machine, substantiallyset forth.

2. As a new article of manufacture, a cylinder or record forphonographs, graphophones or similar machines of celluloid and formedfrom a tube with the ends integral and bent inward and provided withopenings of different diameters so that they fit upon the taper mandrelof the machine, substantially as set forth.

Signed by me this 13th day of November, 1899.

ADEMOR N. PETIT.

Witnesses:

GEO. T. PINCKNEY, E. E. POHER.

